Agree with Al..700cfs at Steelville used to be my cutoff to wade down at Cardiac/Suicide Hill 25 years ago. Doubt if I'd walk down the Hill unless its below 500 cfs now. Its moving pretty quick at 500 cfs and 250 is summer low and slow. I would not hesitate to float it at 1,000 cfs. You would be limited in terms of spots to wade fish, but you could stay in the boat, eddy out, and fish the seams.